I have recently submitted a paper to a journal. The reviewer came back with some very constructive feedback and requested some additional results to be added to the paper. Eventually, the paper was accepted but it has not appeared yet. So, I have three versions of the paper:

• Version 1: This is the version that I submitted to the journal initially.
• Version 2: I have added additional results based on the referee's feedback.
• Version 3: This one was made by the journal. It is basically version 2 formatted using the Journal's template.

My understanding is that I cannot publish version 3 on Arxiv since I signed the publishing agreement, and I can publish version 1 freely. My question is: Can I publish version 2 on Arxiv?

Edit: This is an Elsevier journal, the policy says the following:

I may post the accepted manuscript in my institutional repository and make this public after an embargo period. To ensure the sustainability of peer-reviewed research in journal publications, I may not share the final article publicly, for example on ResearchGate or Academia.edu.

Based on information provided the embargo period/end date is 24 months.